btrfs-progs: Remove unused parameter

[platform/upstream/btrfs-progs.git] / btrfs-select-super.c

diff --git a/btrfs-select-super.c b/btrfs-select-super.c
index 6231d42..e021221 100644 (file)
--- a/btrfs-select-super.c
+++ b/btrfs-select-super.c
@@ -16,8 +16,6 @@
  * Boston, MA 021110-1307, USA.
  */
 
-#define _XOPEN_SOURCE 500
-#define _GNU_SOURCE 1
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -25,21 +23,22 @@
 #include <sys/stat.h>
 #include "kerncompat.h"
 #include "ctree.h"
+#include "volumes.h"
 #include "disk-io.h"
 #include "print-tree.h"
 #include "transaction.h"
 #include "list.h"
-#include "version.h"
 #include "utils.h"
+#include "help.h"
 
 static void print_usage(void)
 {
-       fprintf(stderr, "usage: btrfs-select-super -s number dev\n");
-       fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION);
+       printf("usage: btrfs-select-super -s number dev\n");
+       printf("\t-s super   copy of superbloc to overwrite the primary one (values: 1, 2)\n");
        exit(1);
 }
 
-int main(int ac, char **av)
+int main(int argc, char **argv)
 {
        struct btrfs_root *root;
        int ret;
@@ -48,7 +47,7 @@ int main(int ac, char **av)
 
        while(1) {
                int c;
-               c = getopt(ac, av, "s:");
+               c = getopt(argc, argv, "s:");
                if (c < 0)
                        break;
                switch(c) {
@@ -66,10 +65,8 @@ int main(int ac, char **av)
                                print_usage();
                }
        }
-       set_argv0(av);
-       ac = ac - optind;
-
-       if (check_argc_exact(ac, 1))
+       set_argv0(argv);
+       if (check_argc_exact(argc - optind, 1))
                print_usage();
 
        if (bytenr == 0) {
@@ -79,15 +76,15 @@ int main(int ac, char **av)
 
        radix_tree_init();
 
-       if((ret = check_mounted(av[optind])) < 0) {
-               fprintf(stderr, "Could not check mount status: %s\n", strerror(-ret));
+       if((ret = check_mounted(argv[optind])) < 0) {
+               error("cannot check mount status: %s", strerror(-ret));
                return ret;
        } else if(ret) {
-               fprintf(stderr, "%s is currently mounted. Aborting.\n", av[optind]);
+               error("%s is currently mounted, aborting", argv[optind]);
                return -EBUSY;
        }
 
-       root = open_ctree(av[optind], bytenr, 1);
+       root = open_ctree(argv[optind], bytenr, 1);
 
        if (!root) {
                fprintf(stderr, "Open ctree failed\n");
@@ -96,7 +93,7 @@ int main(int ac, char **av)
 
        /* make the super writing code think we've read the first super */
        root->fs_info->super_bytenr = BTRFS_SUPER_INFO_OFFSET;
-       ret = write_all_supers(root);
+       ret = write_all_supers(root->fs_info);
 
        /* we don't close the ctree or anything, because we don't want a real
         * transaction commit.  We just want the super copy we pulled off the
@@ -104,5 +101,7 @@ int main(int ac, char **av)
         */
        printf("using SB copy %llu, bytenr %llu\n", (unsigned long long)num,
               (unsigned long long)bytenr);
+       close_ctree(root);
+       btrfs_close_all_devices();
        return ret;
 }